The value of the object tLagWeightThresholdAction specifies the action to take when the weight of the physical ports that are operational (link up) is less than the value of tLagWeightThreshold. When a physical port ifOperStatus changes and the weight of operational physical ports is less than or equal to tLagWeightThreshold: - when set to down(1), the ifOperStatus for the Link Aggregation Group (tLagIfIndex) goes to down(2). - when set to dynamicCost(2), the ifOperStatus stays up(2), but dependent protocols such as OSPF are signaled and will adjust their operation (cost) to match the weight of the physical ports remaining in the Link Aggregation Group; a tLagDynamicCostOn notification is generated. - when set to 'staticCost', the ifOperStatus stays up, but dependent protocols such as ISIS are signaled and will adjust their operation (cost) according to the value of the object tLagWeightThresholdStaticCost. When a physical port ifOperStatus changes and the weight of the operational physical ports is greater than tLagWeightThreshold: - when set to down(1), the ifOperStatus for the Link Aggregation Group (tLagIfIndex) goes to up(1). - when set to dynamicCost(2), the ifOperStatus stays up(2), but dependent protocols such as OSPF are signaled and will adjust their operation (cost) to be the value as configured; a tLagDynamicCostOff notification is generated. Regardless of the setting of this object, when the weight of operational physical ports goes to zero, the Link Aggregation Group's ifOperStatus goes to down.